Within the European Union, users of cross-border rail services in neighbouring Member States are often still required to pay surcharges on the price of their tickets, which adds significantly to the cost of daily commuting. For example, there is still a surcharge on train tickets between the town of Arlon in Belgium, just across the border with Luxembourg, and Luxembourg. When will these surcharges, which are no longer justified since the establishment of the Schengen area, be abolished?